Ya in the 2nd video with the truck running you can see the output and the arm start to move, as the wheel turns the shaft in 1/8" turn increments. But shouldn't have to go 1/8 of a turn to get the pitman to move. Nothing is loose, I think there is play in the box, worm or ***** or something. What goes in is not coming out.....

It's not a solid connection, mine moves at least that much and it tracks like a freight train. It takes a little to get everything to move like in the rear end. Remember how much play there was in the yoke when you turn it by hand?